Tractor cab



FIG. 1 is an elevational view of the tractor cab embodying our new design and taken from the left side thereof;

FIG. 2 is an elevational view taken from the front thereof;

FIG. 3 is an elevational view taken from the right side thereof;

FIG. 4 is an elevational view taken from the rear thereof; and

FIG. 5 is a top plan view thereof. 

The ornamental design for the tractor cab, substantially as shown and described. 